All we've really got to go by is Twitter and Reddit, and I rarely see a photo of a Bambu printer without an AMS on top of it or to the side. With it being cheaper to buy an A1 Mini, A1, or P1 WITH an AMS than a base model Prusa MK4 it's not surprising they've been so popular.
It's what makes me completely baffled how much Prusa have fumbled the Core One release. It should've had an enclosed AMS style product to go along side it. The MMU is utter junk in comparison to the AMS, god knows why they are still burrying their head in the sand over this.
I think it depends a bit on what markets we're talking about. Multi-material capability is mostly something I see hobbyists use. I rarely see it in an industrial setting.
And before people say that Prusa and Bambu printers are for the home market: sure. But I have seen consumer grade 3D printers in a lot of different industries. Prusa, Bambu lab and RatRig are the most common consumer grade printers I tend to see in industrial companies. (I don't think RatRigs are that common, but in a few companies that do mechanical design and they need larger volumes I've seen them being used)
Consumer grade FDM printers are cheap to buy, very cheap to run, reliable and produce decent quality prints. Also, they are far, far better than the FDM printers that you used to be able to get from the likes of Stratasys. For the price of one of the more upscale industrial machines you can buy a sizeable print farm of FDM printers.
When you do a lot of rough prototyping it is better to have a lot of cheap printers than just one advanced printer. Having lots of printers means more people can make more prototypes per day. And it reduces the need for buying more of the expensive printers and then have people have to wait for their turn.
This is why it would be interesting to know the sales figures for multi-material systems. I think the professional market might be less visible online, but they certainly buy a lot of printers.
It's what makes me completely baffled how much Prusa have fumbled the Core One release. It should've had an enclosed AMS style product to go along side it. The MMU is utter junk in comparison to the AMS, god knows why they are still burrying their head in the sand over this.